Buffing-wheel.



S. S. SPERO.

BUFPING WHEEL.

APPLICATION FILED APR. 28, 1914.

1 1 1 8, agg Patented Nov. 24, 191L TED @TATEti T OFFICE SAJMI'UIEL S. SPEED, 03: NEVJ YORK, Y.

BUFFIN Li-WEI EEL.

Application filed April :28,

"provement in abrasive wheels and more particularly an improvement in butting wheels. These have hitherto been constructed oi various materials,-.namely canvas, leather and of combinations of various materials, such as canvas or leather wheels being made by eementin a number of canvas or leather cii cular dis s to each other and facing same with emery or other abrasive.

My invention has for its object the production of an improved bulling wheel of a new material lighter in construction and more durable than those hitherto in use.- For this purpose I employ ordinary scrap cork, the cork being such as is ordinarily used in the manufacture of bottle stoppers.

Referring to the drawing, Figure 1 shows a sectional view through a press which may serve in the manufacture of articles under this invention, and Fig. 2 shows a section of the product.

In the drawing indicates a sub-base having standards 11 secured thereto upon which a cross-beam 12 is mounted. The subbase 10 supports a base 13 which may be of any desired. shape, and this base has a cylindrical or other-shaped ortion terminating in the shoulder 14- to term a die member 15, in which the material to be treated is placed. A head or follower 16 is slid-ably disposed in the die men'iber l5, and this follower is connected as by a stem 17 to a piston 18 which actuatos in a. cylinder l9. Fluid is admitted into or discharged from this cylinder through piping 20.

In carrying out this invention the mate rial being treated is heated. to the desired degree in the simultaneous subjection of the material topressure. To accomplish this the follower 1G is heated as by a burner 21. which is fed from a source of supply through a piping 22, and the walls of the die member are heated as b' a burner 23 from the same source of supply. The pipe.

Specification oi Letters Patent.

Patent ed Nov. 24, 1914.

191-1. Serial No. 335.029.

.22 may have a valve 24 therein to regulate the low of gas to the burner and thereby regulate the tcuuierature of the heating units.

The bros-Hiram 12 supports a hydraulic ram comprising aicylinder 525 in which is slidably mounted episton 9c, and this piston has a plunger .2? depending therefrom which passes through a stalling box when it is desired that the piston 26 should be re turned hydraulically or by other fluid pressur 'lhc plunger 2? supports the die member 21 which conforms with the recess 15 so that when the plunger 2? is forced down wardly, the die member 28 compresses the material being treated against the follower l6 and compressais the mass to the desired degree. The die member 28 is heated by a burner '39 sup dicd as through a flexible tube 30 which connects to the branch pipe ill as through a valve 32.

The pipes '22 and 31. lead to any desired source oi. supply. The pipe 33 connects with any source of supply for a fluid pressure and the pipe has connection therewith as through a valve iii. A. pipe 35 connects with the supply pipe 33 as through a valve 36, and this pipe conununicutes with the interior of the cylinder above the piston 26. When the valve 36 has been opened to admit fluid under pressure above. the piston :56 it is apparent that the die member 28 is Forced dou'nv anlly iu the die member 13. When it is desired to raise said piston to extra t the die member 29, fluid pressm'c is admitted through the pipe 37 and valve 18 to the under side of said piston when said piston will be raised. A waste pipe 39 is provided to enable the discharge of the lluid admitted to the cylinders lflahd 2-7 when so desired and this pipe has connections with the pipe 520 through a valve. -10 to the pipe through a valve 41, and to a pipe 37 through the valve 42.

It is apparent that the drawing submitted illustrates on 'orm of apparatus which may serve in carrying out my invention, and it is understood that I am not restricted to the identical form shown.

For the production of my improved buifing wh -e1, I proceed as follows:-I prepare tlu. mold 15 of the size of the finished wheel and in this mold without the admixture of any other substances placed a quantity of rranulated cork which is compressed into the sides of the mold by means of a suitable die member 18 by hydraulic pressure.

Preferably the compression takes place simultaneously with the application of heat so that the natural gum and resinous matter in the cork will soften and Will act as an agglutinant to bind the entire body into a umform and coherent mass. Upon the completion of the heating and compressing, the disk so obtained is allowed to cool and requires only a surfacing with emery or other abrasiive tobe ready for use as a buffing I am aware that it old in the art to use -cork as an ingredient in abrasive Wheels but hitherto no wheel has ever been made for abrasive purposes of cork solely, homogeneous throughout and having the superior qualities of this buffing Wheel.

What I claim is 1. As an article of manufacture, a bufiiug hesive substances naturally present in the cork.

3. A process of making bufling Wheels by taking natural cork in relatively small particles and simultaneously compressing and heating the body of such cork to the shape desired.

In testimony whereof I aflix my signature 'in presence of two Witnesses.

SAMUEL S. SPERO.

Witnesses:

GEORGE L. TI-IOM, .Hnco Moon. 

